| details |
Early Devonian |
|
Canada(Quebec) |
McGregor,D.C. Devonian spores from eastern and Arctic Canada. |
1967 |
| details |
Early Devonian |
|
Libya |
Kupriyanova,L.A. On the evolutionary levels in the morphology of pollen grains and spores |
1969 |
| details |
Emsian |
|
Scotland |
Holland,C.H. et al. Stuftgart the British Isles the Silurian-Devonian boundary |
1977 |
| details |
Nd |
|
Nd |
Edwards,D. et al. Miscellaneous. 13F: Older plant macerals (excluding spores). (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Emsian |
|
Scotland |
Edwards,D. et al. In situ, pollen and spores in plant evolution. 14A -Review of in situ, spores in early land plants. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |